Quick release structure for fixing claw insert of electric wrench

Abstract

The utility model relates to the technical field of electric wrenches, in particular to an electric wrench fixing claw insert quick-release structure which comprises a gear ring, an insert through cavity is formed in one side of the surface of the gear ring, a dovetail through groove is formed in the side, located on the insert through cavity, of the surface of the gear ring, the insert through cavity is communicated with the dovetail through groove, a quick-release groove is further formed in the surface of the gear ring, and the insert through cavity is communicated with the quick-release groove. The quick release groove is communicated with the insert through cavity; a detachable fixing claw insert is inserted into the insert through cavity, and a wedge opening is formed in one side of the surface of the fixing claw insert. And a quick-release assembly is mounted in the quick-release groove and is matched with the quick-release groove to quickly release and fix the fixed claw insert. According to the utility model, through the arrangement of the quick release assembly, the quick release and fixing work of the fixing claw insert is realized by utilizing the quick release assembly, the problem that a bolt needs to be rotated when the existing fixing claw insert is disassembled is solved, and the convenience in disassembly and assembly of the fixing claw insert is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric wrenches, in particular to a quick-disassembly structure of a fixed claw insert of an electric wrench. Background Art

[0002] An electric wrench is a tool for tightening or removing high-strength bolts or steel sleeves. It is also called a high-strength bolt gun. When tightening or removing high-strength bolts or steel sleeves, the electric wrench achieves disassembly and assembly by holding them tightly with the fixed claw inserts and the movable claw inserts. Therefore, the fixed claw inserts are prone to wear and need to be replaced after wear.

[0003] The fixed claw inserts of existing electric wrenches are all fixed by bolts. Therefore, after the fixed claw inserts are worn, the bolts must be removed to complete the replacement. This method will make the fixed claw inserts more cumbersome during replacement, thereby increasing the labor intensity of replacing the fixed claw inserts. Therefore, a quick-release structure for the fixed claw inserts of an electric wrench is needed. Utility Model Content

[0004] The utility model aims to provide a quick-release structure for fixing claw inserts of an electric wrench, so as to solve the problem in the above background technology that the fixing claw inserts of the existing electric wrenches are fixed by bolts and are complicated to disassemble.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a quick-release structure of an electric wrench fixed claw insert, comprising a gear ring, an insert through cavity is provided on one side of the gear ring surface, and a dovetail through groove is provided on the gear ring surface located on one side of the insert through cavity, and the insert through cavity is communicated with the dovetail through groove, and a quick-release groove is also provided on the surface of the gear ring, and the quick-release groove is communicated with the insert through cavity; a detachable fixed claw insert is inserted into the interior of the insert through cavity, and a wedge opening is provided on one side of the surface of the fixed claw insert; a quick-release assembly is installed inside the quick-release groove, and the quick-release assembly is used for quick release and fixation of the fixed claw insert.

[0006] Preferably, a dovetail portion is integrally injection-molded on the back side of the fixing claw insert, and when the fixing claw insert is inserted into the insert through cavity, the dovetail portion will be inserted into the dovetail through groove to limit the horizontal degree of freedom of the fixing claw insert.

[0007] Preferably, the quick-release assembly is composed of a cover, a hexagon socket bolt, a coil spring, a locking pin and a wedge, the cover is placed on the surface of the gear ring, and the bottom end of the cover extends to the inside of the quick-release slot.

[0008] Preferably, a hexagon socket bolt with a gasket is provided on the surface of the cover, and the bottom end of the hexagon socket bolt passes through the cover and is threadedly connected to the surface of the gear ring, and a locking pin that can move up and down is movably connected to the surface of the cover.

[0009] Preferably, a wedge block that can move left and right is arranged inside the quick-release groove and below the cover. The top of the wedge block fits and matches the bottom of the locking pin. When the fixed claw insert is in the fixed state, one end of the wedge block is inserted into the wedge opening. One end of the spiral spring is placed inside the quick-release groove, and both ends of the spiral spring are closely attached to the surface of the wedge block and the quick-release groove respectively.

[0010] Preferably, stepped surfaces are arranged on both sides of one end of the fixed claw insert. After the fixed claw insert is inserted into the insert through cavity, the stepped surfaces fit with the surface of the gear ring. The stepped surfaces cooperate with the quick-release assembly to limit the freedom degree of the quick-release assembly in the vertical direction.

[0011] Compared with the prior art, the beneficial effect of the present utility model is that: through the setting of the quick-release assembly in the quick-release structure of the fixed claw insert of the electric wrench, when the fixed claw insert is inserted into the insert through cavity and the stepped surface of the fixed claw insert fits with the surface of the gear ring, the elastic force of the spiral spring will push the wedge block into the wedge opening under the support of the quick-release groove. When the wedge block moves, it will drive the locking pin to move upward and protrude from the surface of the cover, completing the quick installation and fixation of the fixed claw insert. When disassembly is required, by pressing the locking pin, the locking pin will drive the wedge block to retract, so that the wedge block retracts and disengages from the wedge opening, and then the fixed claw insert can be removed, solving the problem that the existing fixed claw insert needs to rotate bolts during disassembly, and improving the convenience of disassembly and assembly of the fixed claw insert. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is the three-dimensional rear view structure schematic diagram of the present utility model;

[0013] Figure 2 is the three-dimensional front view structure schematic diagram of the present utility model;

[0014] Figure 3 is the enlarged structure schematic diagram of the separated state of the present utility model;

[0015] Figure 4 is the exploded structure schematic diagram of the upright state of the present utility model;

[0016] Figure 5 is the exploded structure schematic diagram of the inverted state of the present utility model.

[0017] In the figure: 1, gear ring; 11, insert through cavity; 12, dovetail through groove; 13, quick-release groove; 2, fixed claw insert; 21, dovetail part; 22, stepped surface; 23, wedge opening; 3, quick-release assembly; 31, cover; 32, hexagon socket head cap screw; 33, spiral spring; 34, locking pin; 35, wedge block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. In addition, the terms "first", "second", "third", "upper, lower, left, right", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. At the same time, in the description of the present utility model, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0019] The structure of the quick-release structure of the fixed claw insert of the electric wrench provided by the present utility model is as Figure 1 and Figure 3 shown, including a toothed ring 1. On one side of the surface of the toothed ring 1, there is an insert cavity 11, and on one side of the surface of the toothed ring 1 located at the insert cavity 11, there is a dovetail through groove 12, and the insert cavity 11 communicates with the dovetail through groove 12. A quick-release groove 13 is also provided on the surface of the toothed ring 1, and the quick-release groove 13 communicates with the insert cavity 11. A detachable fixed claw insert 2 is inserted into the insert cavity 11. On one side of the surface of the fixed claw insert 2, there is a wedge opening 23. A dovetail part 21 is integrally injection-molded on the back side of the fixed claw insert 2. When the fixed claw insert 2 is inserted into the insert cavity 11, the dovetail part 21 will be inserted into the dovetail through groove 12 to limit the freedom degree of the fixed claw insert 2 in the horizontal direction.

[0020] During implementation, the fixed claw insert 2 is inserted into the insert cavity 11. When inserting, the dovetail part 21 will enter the dovetail through groove 12 to realize the limit work of the freedom degree in the horizontal direction.

[0021] Furthermore, as Figure 2 , Figure 4 and Figure 5As shown in the figure, a quick-release component 3 is installed inside the quick-release groove 13. The quick-release component 3 is used for the quick-release and fixation of the fixed claw insert 2. The quick-release component 3 is composed of a cover 31, an inner hexagon bolt 32, a helical spring 33, a locking pin 34, and a wedge block 35. The cover 31 is placed on the surface of the gear ring 1, and the bottom end of the cover 31 extends into the quick-release groove 13. An inner hexagon bolt 32 with a gasket is arranged on the surface of the cover 31, and the bottom end of the inner hexagon bolt 32 penetrates through the cover 31 and is threadedly connected to the surface of the gear ring 1. A locking pin 34 that can move up and down is movably connected to the surface of the cover 31. A wedge block 35 that can move left and right is arranged below the cover 31 inside the quick-release groove 13. The top of the wedge block 35 fits and matches the bottom of the locking pin 34. When the fixed claw insert 2 is in the fixed state, one end of the wedge block 35 is inserted into the wedge opening 23. A helical spring 33 is placed at one end inside the quick-release groove 13, and both ends of the helical spring 33 are closely attached to the surface of the wedge block 35 and the quick-release groove 13 respectively. Step surfaces 22 are arranged on both sides of one end of the fixed claw insert 2. After the fixed claw insert 2 is inserted into the insert through cavity 11, the step surfaces 22 are in close contact with the surface of the gear ring 1. The step surfaces 22 cooperate with the quick-release component 3 to limit the freedom degree of the quick-release component 3 in the vertical direction.

[0022] During implementation, when the fixed claw insert 2 is inserted, one end of the fixed claw insert 2 will first contact the inclined surface of the wedge block 35. Due to the guiding action of the inclined surface of the wedge block 35, as the fixed claw insert 2 is continuously pushed with force, the side where the fixed claw contacts the inclined surface of the wedge block 35 slides on the inclined surface of the wedge block 35. At the same time, the wedge block 35 overcomes the elastic force of the helical spring 33 and moves into the quick-release groove 13 until it completely enters the groove. The fixed claw insert 2 can continue to be pushed downward to complete the assembly.

[0023] Working principle: When in use, first insert the fixed claw insert 2 into the insert through cavity 11. When inserting, the swallowtail part 21 will enter the swallowtail through groove 12 to realize the limit of the freedom degree in the horizontal direction. When the fixed claw insert 2 is inserted until the step surface 22 is in close contact with the surface of the gear ring 1, the elastic force of the helical spring 33 will, under the support of the quick-release groove 13, push the wedge block 35 into the wedge opening 23. When the wedge block 35 moves, it will drive the locking pin 34 to move upward and protrude above the surface of the cover 31, thereby realizing the limit of the freedom degree in the vertical direction and completing the quick installation and fixation of the fixed claw insert 2.

[0024] When disassembly is required, by pressing the locking pin 34, the locking pin 34 will drive the wedge block 35 to retract. When the wedge block 35 retracts, it will disengage from the wedge opening 23, and then the fixed claw insert 2 can be removed, solving the problem that the existing fixed claw insert needs to rotate bolts during disassembly and improving the convenience of disassembly and assembly of the fixed claw insert.

[0025] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A quick-release structure for fixing claw inserts of an electric wrench, comprising a gear ring (1), characterized in that: A insert cavity (11) is provided on one side of the surface of the gear ring (1), and a dovetail groove (12) is provided on the surface of the gear ring (1) on one side of the insert cavity (11), and the insert cavity (11) and the dovetail groove (12) are in communication; a quick-release groove (13) is also provided on the surface of the gear ring (1), and the quick-release groove (13) is in communication with the insert cavity (11); a fixed claw insert (2) is inserted into the insert cavity (11), and a wedge opening (23) is provided on one side of the surface of the fixed claw insert (2); a quick-release assembly (3) is installed in the quick-release groove (13), and the quick-release assembly (3) is used for quick release and fixation of the fixed claw insert (2).

2. The electric wrench fixed claw insert quick-release structure according to claim 1, characterized in that: The back side of the fixed claw insert (2) is integrally injection-molded with a dovetail portion (21), and when the fixed claw insert (2) is inserted into the insert cavity (11), the dovetail portion (21) engages with the dovetail groove (12) to limit the horizontal freedom of the fixed claw insert (2).

3. The electric wrench fixed claw insert quick-release structure according to claim 1, characterized in that: The quick-release assembly (3) is composed of a cover (31), a hexagon socket bolt (32), a coil spring (33), a locking pin (34) and a wedge (35); the cover (31) is placed on the surface of the gear ring (1), and the bottom end of the cover (31) extends to the inside of the quick-release groove (13).

4. The electric wrench fixed claw insert quick-release structure according to claim 3, characterized in that: The surface of the cover (31) is provided with a hexagon socket bolt (32) with a gasket, and the bottom end of the hexagon socket bolt (32) passes through the cover (31) and is threadedly connected to the surface of the gear ring (1), and the surface of the cover (31) is movably connected with a locking pin (34) that can move up and down.

5. The electric wrench fixed claw insert quick-release structure according to claim 4, characterized in that: A wedge block (35) that can move left and right is arranged inside the quick-release groove (13) and below the cover (31). The top of the wedge block (35) fits with the bottom of the lock pin (34), and when the fixed claw insert (2) is in a fixed state, one end of the wedge block (35) is inserted into the inside of the wedge opening (23). A coil spring (33) is placed at one end inside the quick-release groove (13), and the two ends of the coil spring (33) are respectively in close contact with the surface of the wedge block (35) and the surface of the quick-release groove (13).

6. The electric wrench fixed claw insert quick-release structure according to claim 1, characterized in that: Both sides of one end of the fixed claw insert (2) are provided with step surfaces (22), and after the fixed claw insert (2) is inserted into the insert cavity (11), the step surface (22) and the surface of the gear ring (1) are in contact with each other, and the step surface (22) cooperates with the quick release component (3) to limit the degree of freedom of the quick release component (3) in the vertical direction.

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